RT9193，是一款高纹波抑制比的低压差高PRSS的线性稳压器件（LDO） 输入电压2.5V～5.5V，输出电压1.5V～5.0V，稳压精度+2％，输出电流300mA SOT23-5/SC70-5封装 兼容LM2985 主要应用于MP3、PMP、学习机、数码相框、复读机、手机、GPS、蓝牙产品、电源管理等电路及方案 RT9193：300mA High PSRR CMOS LDO： 300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator 特点：高PSRR、低噪声、内置下拉电阻（Pull down）、内置放电回路（Discharge），尤其适合于RF应用。 General Description The RT9193 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9193 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9193 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The RT9193 consumes less than 0.01µA in shutdown mode and has fast turn-on time less than 50µs.The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the 5-lead of SC-70, SOT-23 and WDFN-6L 2x2 packages. Features Ultra-Low-Noise for RF Application Ultra-Fast Response in Line/Load Transient Quick Start-Up (Typically 50µs) < 0.01µA Standby Current When Shutdown Low Dropout : 220mV @ 300mA Wide Operating Voltage Ranges : 2.5V to 5.5V TTL-Logic-Controlled Shutdown Input Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1µF Output Capacitor Required for Stability High Power Supply Rejection Ratio Custom Voltage Available RoHS Compliant and 100% Lead (Pb)-Free Applications CDMA/GSM Cellular Handsets Battery-Powered Equipment Laptop, Palmtops, Notebook Computers Hand-Held Instruments PCMCIA Cards Portable Information Appliances
